Apparatus for feeding batter to a baking-machine.



I. w. LAW H'EAD. I

APPARATUS FOR FEEDING BATTER TO A BAKING MACHINE.

2 SHEETS-SHEET 1.

THE COLUMBIA PLAP IOORAPH c0., WASHING-romp. c.

J. w; LAWHEAD.

' APPARATUS FOR FEEDING BATTER TO A BAKING MACHINE.

APPLICATION FILED MAR. 4. 1912.

1,1714447, v Patented Feb. 15, 1916.

2 SHEETS-SHEET 2- "mg cq'y'umsm PLANOORAFH co., WASHINGTON, n. c.

tinrrnn STATES PATENT ornron.

JAMES w.'IiAwHEAD, r WILMINGTON, OHIO.

APPARATUS FOR FEEDING BATTER TO A BAKING-MACHINE.

- the batter from bulk and to transfer said portion of batter to a point of delivery and 'to finally deposit such batter at the said point of delivery.

My invention aims to provide an apparatus which is in connection with a source of batter supply and which is positively efiiective to select thedesired proportion of the batter and by positive operation throughout to transfer and deliver the same as stated. The positive operation of selecting the determinate portion of batter is desirably effected by the utilization of a particular structure of pump and by the creation therein of a partial vacuum tending to positively draw the definite portion of the batter into the pump. The subsequent operations preferably consist in pocketing the saidselected portion ofbatter and without compression of the same, carrying it to a point of deposit and then by'means of compression of the said selected portion of the batter, positively ejecting the same through a delivery port provided therefor and in proper relation to a passing baking plate.

My invention is peculiarly adaptable to a chain type of ice cream cone baking machine, although it is not limited in its various phases to such use.

The preferred embodiment of my invention is shown in the accompanying drawings and in this form of depositing apparatus, here are utilized two pistons working with in a cylinder and desirably effective by oer-- tain distinct steps of operation. These steps are illustrated by Figures 2, 8 and l and they comprisev the drawing in of the batter into the cylinder by relative movement of the pistons from the position shown in Fig. 2 to that shown in Fig. 3; the movement of the pistons simultaneously and while in stationary relation to each other'to the point of deposit; and the bringing together of such pistons above the delivery openingof Specification of Letters Patent.

Patented Feb. 15, 1916.

Application filed March 4, 1912. Serial No. 681,429. I

the cylinder to effect the deposit. These steps are briefly outlined at the beginning of this specification to assist in a complete understanding of the mechanism to be subsequentlydescribed.

. In the drawings, similar characters of reference designate corresponding parts and,

- therein:

l is a side elevation of a baking machine of the general type to which my invention 1s applied, Fig. 2 is a detail showing the position of the pistons of my apparatus just prior to the drawing in of the batter from its source of supply to the cylinder, Fig. 3 is a similar detail view of my device applied to a chain type'of baking machine and showing the pistons in their second rela tive position, at which time they have positively drawn in the desired quantity of batter, Fig. 4 is a detail view showing thepo'sition of the pistons, which has been assumed in the, positive delivery of the seclected portion of batter and which relative'position is maintained during the return of the pistons to the position shown in Fig. 2,.Fig. 5 is a plan view of the structure shown in Fig. 3, Fig. 6 is an end elevation of the structure shown in Fig. 3, and, Figs. 7 and 8 are details of the latch structure'which is desirably utilized by me to automatically connect and disconnect the two pistons.

In the drawings, there is shown a baking machine of the chain type, comprising a base 1, endless complementally traveling chains 2 and 3 and controlling gears and sprockets l. The endless chains 2 and 3 are desirably formed from baking plates 5 and 6 which may be heated in any desiredmanner and which are shown as being linked together and provided withlaterally extending rollers or pins 7 and 8 to which conform the driving sprockets mentioned. The chain type of machine to which my invention is preferably applied, comprises a lower chain element whose receiving end extends beyond the end of the upper chain and this extended portion provides a ready receiving surface for batter to be deposited on .the baking plates. The power may be'transmitted to the machine by a pulley as at 9 or in any other desired 'manner.

Thebase element 1 carries at the extended end of the lower chain a U-shaped saddle element'lO andvertically extending arms 11 .which are individually disposed upon either side of the baseelement. These arms 11 are preferably connected to the saddle element 10 by spanning braces 12. The saddle eleinlet port 1 1. When a sufficient quantity of ment 10 serves to support a cylinder 13 havthe batter is drawn into the cylinder, the ing an inlet port 14 and an outlet port 15, piston 29 1s caused to cease its movement by this outlet port 15 being desirably transversely elongated and being in the form of a tapered base 16 whereby batter ejected through the same, will have a confined discharge area. Extending from one end of the cylinder, 1 desirably provide a multi-face cam element 17 having faces 18 and 19. This element 17 may be integrally carried by the cylinder and such cylinder is likewise provided with a feed pipe 20 threaded into an enlargement of the port 1 and leading from a batter containing can 21.

The multiple piston element utilized in my invention, comprises a piston 22 adjustoperation of the mechanism yet to be described and the latch element 33 is caused to move toward the right. At the initial mo ment of the movement of this latch element toward the right, the said latch element is in the position shown in Fig. 3 and therefore causes the yoke 24: to move toward the right likewise. Continued movement in this direction, carries both pistons toward the right in relatively unchanging positions until the dog 36 moves into contact with the cam surface 19, which in time causes the latch element to lift. This lifting takes place when the selected portion of the batter ably threaded upon its stem 23, which is is above or substantially above the outlet carried by a yoke element 24:, being desirport 15 of the cylinder and necessarily reably immovable thereon. The yoke element suits 111 a movement of the piston 29 toward 24 h l 25 d 26 d spanning pi s the right while the piston 22 is precluded 27 d 28, Th pa i g ie 28 i b r d from further movement toward the right by for the sliding reception of the stem of a n act of the transverse bar 28 with the complemental piston 29 and this stem 30 is and end of the cylinder. This, of preferably adjustably threaded into the pis- Co r results in a bringing of the pistons ton 29. Carried at or near the outermost t gethe1" and in a compression of the batter end of the stem 30 is a transverse pin 31 helebetween. This compression of the batwhich works'in a slot 32 of a pivoted latch l positively forces it through the outlet 33 operating in conjunction with the trans- P r 1 and on to the baking plate there- Verse b 2 d i mu r i d t it beneath. The transversely elongated form outer end by the depending bar 34: which it of the delivery port is efiective to compenstraddles. The latch 33 has a hook element S f r the traveling movement of the bak- 35 which is capable of assuming either the 1g plates and produces a deposit of comiti Shown i Fi 2 or th iti parative'ly uniform diameter in a manner shown in Fig. 3. It is caused to move up- WhlCh Will be well understood. dl i t one or th th f th "*ately upon the delivery of this portion of the Immedisurfaces 19 and 18 in their movements tions by means of the dogs 36 and 37 which}, are individually yieldable in one directioi but positively cooperate respectively wit that positive movement of the latch element l toward the left under control of mechanism" to be hereinafter described, causes the latch dog 37 to cooperate with the surface 18 and to thereby lift the latch element 35 so as to batter, the latch 33 drops into locking relation to the transverse bar 28 and the rearward movement of the pistons is commenced under the control of the mechanism yet to be described.

The reciprocation of the yoke 24 and the consequent operation of the pistons, is efgfected bythe provision of a rocking shaft 37 carrying arms 38 and 39 desirably respectively disposed at opposite ends of such shaft and preferably having removable antifrlctlon elements 4L0 and 41 carried in sockets into the cylinder through the pipe 20 and release it from the transverse bar 28. Then, in their ends and maintained therein by set continued movement of the latch element screws 42 and 4-3. operates through means of the slot 32 and hers are further designed to be longitudipin 31 to draw the piston 29 and stem 30 nally adjustable so as to lengthen or shorten away from close relation to the piston 22 the length of each arm and to thereby reguwhi h i ai tained against further velate the length of the period of effectiveness ment by the contact of the transverse bar of each arm, in a manner to be hereinafter element 27 with the end ofthe cylinder. 1ndescribed. It will be understood that the asmuch as this piston 22 is maintained arm 38 is intended to cooperate with the against further movement toward the left by lower chain element and the arm 39 with the the contact of the transverse bar 24 with the upper chain element and together, these end of the cylinder, further movement toarms in their coactive relation to these chain ward the left of the piston 29, which neceselements, serve to reciprocate the yoke 2i.

sarily results after the release of the latch This reciprocating action is directly efi'ected 33 from the transverse bar 28, produces a by the centrally depending arm 34-, which is partial vacuum and tends to. draw the batter straddled by and pivotally secured as aforesaid, to the latch element 33.

These anti-friction mein- K transverse bar 28 from the latch hook 35.

Still further pressure thenserves to draw the piston 29 toward the left, while the piston 22 is maintained stationary as aforesaid by the contact of the transverse bar 27 with the right-hand end of the cylinder; This motion continues until the desired quantity of batter is drawn into the cylinder, at which time the anti-friction element 41 of the arm 39 escapes from control of the upper chain element. Then, the arm 38 is struck by one of the pins 7 of the lower chain element, which contacts with its anti-friction member l and causes forward movement of the latch element. This forward movement of the latch element drives the yoke 2ft forwardly and during this forward movement of the yoke, the pistons are in relatively unchanging positions. At about or just previous to the time the transverse bar 28 strikes the left-hand end of the cylinder, the dog 36 comes into contact with the surface 19 and raises the latch element 33. Continued forward movement of the arm 34: which is nec essarily produced by the forward movement of the arm 38 and the consequent rocking of the shaft 37*, causes the latch element 33 to completely free itself and results in the continued movement toward the right of the piston 29 in a manner to compress the batter which has been retained between the pistons. This compression of the bater continues until the pistons practically contact with each other and necessarily results in the positive 7 discharge of the said selected portion of the batter from the delivery port at which time the anti-friction element escapes from control of the lower chain element 5.

It will be understood that the provision I of the adjustable anti-friction element permits of a variable timing of the operation of the machine and that the effect of the pistons 22 and 29 may be somewhat varied by further adjustment which is provided for in the manner described.

What I claim is:

1. A batter pump for baking machines comprising a cylinder having inlet and outlet ports, opposing pistons, means for positively controlling each of said pistons when spaced on either side of said inlet port to relatively move them away from each other to charge said cylinder, and means for positi-vely controlling each of said pistons when spaced on either side of said outlet port to relatively movethem toward each other to effect a discharge.

2. A batter pump for baking" machines comprising a cylinder having inlet and outlet ports, opposing pistons, means for pocketing a quantity of; batter between said fpise tons through said inlet, meansfor transferringsaid pocketedbatter to a position over-said outlet, and means for effecting a discharge of said batter by a movement of one piston toward the other.-

3. A batter pump for baking machines comprising a cylinder having inlet and outlet'ports, opposing pistons, means for pocketing a quantity of batter between said pis-' tons through said inlet, means for transferring said pocketed batter-to a position over said outlet, and means for positively controlling each of saidpistons and moving them relatively to decrease the-size of said pocket when over said outlet port to expel said batter. g

- A. A batter pump" for baking machines, comprising a cylinder having inlet and outlet ports, opposing pistons, means for pocketing a quantity of batter between said pistons through said inlet, means for transferring said pocketed batter to'a position over said outlet and maintaining said pistons in relatively unchanged positions, and means for positively arresting one of said pistons and moving the other after said transfer to expel the batter. i

5. A batter-pump for baking machines comprising a cylinder having inlet and outlet ports, opposing pistons, means for moving said pistons apart to form a pocket be.- tween them, means for simultaneously moving both pistons to transfer the batter drawn in to a position opposite the outlet, and

means for positively arresting one of said pistons while furthermovement of the other causes the discharge of the batter.

6. A batter'pump for baking machines comprising a cylinder having spaced inlet and outlet ports, opposing pistons, means for moving said pistons apart while at the inlet to pocket a charge of batter, means for transferring said pistons while in spaced relation to the outlet, and means for moving said pistons into substantially abutting relation when over said outlet to effect a dis charge of said batter.

7. A batter pump for baking machines comprising a cylinder having spaced inlet and outlet ports, opposing pistons, means for moving said pistons to cause a suction of the batter therebetween while the outlet port is closed, means for opening said out let port, means-for again moving said pisin their abutting relation to'initial position. 13:

8. A batter pump for baking machines comprising a cylinder having spaced inlet and outlet ports, opposing pistons, means for pocketing-a charge of batter between said pistons, means for closing said outlet port during the admission of said batter, means for moving said pistons into substantially abutting relation when said outlet has been opened to eject said batter, and means for closingsaid inlet port while ejecting said batter.

9. A batter pump for baking machines comprising a cylinderhaving inlet and outlet ports, opposing pistons, means for pocketing a charge of batter between said pistons, one of said pistons closing the outlet port during the charging operation, means for moving said pistons in spaced relation to the outlet, means for ejecting said batter, the opposing piston closing-the inlet port during the ejecting operation.

10. A batter pump for baking machines comprising a cylinder having inlet and outlet ports, opposing pistons, means for separating said pistons at the inlet, means for moving said pistons in spaced relation to said outlet, means for arresting the move ment of one of said pistons continuing the movement of the other piston to close the space above said outlet.

11. A batter pump for baking machines comprising a cylinder having an inlet and an outlet, opposed pistons, means for simultaneously moving said pistons between the inlet and outlet of said cylinder, and an automatically releasable locking device for maintaining said pistons in relatively unchanging positions during such movement.

1:2. A batter pump comprising a cylinder having an inlet and an outlet formed therein, opposed pistons operating within said cylinder, automatically releasable means for maintaining said pistons in spaced relation and means for simultaneously moving them from the inlet to the outlet of said cylinder, and for moving said pistons relatively toward each other to expel the batter taken in through the inlet upon the release of said automatically releasable means.

13. A batter pump comprising a cylinder having an inlet and an outlet, opposing pistons, means for moving said pistons apart while. at the inlet in said cylinder to draw in the batter, means for transferring said pistons, automatically releasable means for locking said pistons in spaced relation to said outlet, and means for moving said pistons together while at saidoutlet upon release of said locking means.

14. A batter pump for baking machines comprising a cylinder having an inlet and an outlet, said inlet being connected to a source of batter supply, opposing pistons,

means for moving said pistons between the inlet and outlet of said cylinder, automatically releasable means for locking said pistons together during such movement and means for automatically moving said pistons relatively upon release of said locking means.

15. A batter pump for baking machines comprising a cylinder having an outlet and an inlet connected to the source of batter supply, opposing pistons, means for moving said pistons between the inlet and outlet of said cylinder, automatically releasable means for locking said pistons together, means for automatically releasing and moving said pistons apart While adjacent the in let of said cylinder to form an expanding chamber for drawing in the batter, and means for moving said pistons toward each other while the cavity therebetween is in communication with the outlet of said cylinder.

16. A batter pump for baking machines comprising a cylinder having an outlet, and an inlet connected to the source of batter supply, opposing pistons, means for moving said pistons between the inlet and outlet oi said cylinder, automatically releasable means for locking said pistons together, means for releasing and moving said pistons apart while adjacent the inlet of said cylinder to form an expanding chamber for drawing in the batter, and means for automatically releasing and moving said pistons toward each other while the cavity therebetween is in communication with the outlet of said cylinder.

17. A batter pump for baking machines comprising a cylinder having an outlet, and an inlet connected to a source of batter supply, opposing pistons, means for moving said pistons between the inlet and outlet of said cylinder, automatically releasable means for maintaining said pistons relatively immovable for a period of their travel,

and means for governing such period of travel by control of said last-named means.

18. A batter pump for baking machines comprising a cylinder having an outlet, and an inlet connected to a source of batter supply, opposing pistons, means for moving said pistons between the inlet and outlet of said cylinder, an element for connecting said pistons, a latch element for controlling the position of said element, and means for automatically moving said latch element into varying positions.

in testimony whereof I aihx my signature in presence of two witnesses.

JAMES XV. LAXVHEAD. Witnesses:

O. W. HALE,

WALTER F. CHANNEL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

